Design method of GIS insulator with 2D U type gradient distribution of dielectric constant

A technology of dielectric constant and gradient distribution, which is applied in the field of modified polymer materials and its preparation, can solve the problems of complex influencing factors, poor technical controllability, difficulty in mass-manufacturing epoxy insulators, etc., and achieve the effect of improving operation stability

Inactive Publication Date: 2018-08-24
TIANJIN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, this technology has poor controllability and complex influ

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  • Design method of GIS insulator with 2D U type gradient distribution of dielectric constant

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Experimental program
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Effect test

Embodiment 1

[0034] 1) Put the epoxy resin base, curing agent and alumina into the mixing tank according to the ratio of 100:38:330, and the temperature is 130°C; turn on the motor for stirring, vacuum degassing; push the preheated mold into the pouring tank, Carry out evacuation treatment; pour the mixed epoxy resin mixture into the mold through the pouring equipment.

[0035] 2) Epoxy resin is processed by step curing method. The curing process is divided into two steps: first put the mold after vacuum treatment into the oven for primary curing, and then demould; put it into the oven again for secondary curing, and after cooling, you can get Epoxy resin pot insulators.

[0036] 3) Gradient design is carried out on the epoxy resin pot insulator, that is, its surface is divided into five closely connected rings from the inside to the outside, so that the relative permittivity of the ring first decreases and then increases:

[0037] Place the epoxy resin pot insulator in the magnetron sput...

Embodiment 2

[0040] 1) Put the epoxy resin base, curing agent and alumina into the mixing tank according to the ratio of 100:38:330, and the temperature is 130°C; turn on the motor for stirring, vacuum degassing; push the preheated mold into the pouring tank, Carry out evacuation treatment; pour the mixed epoxy resin mixture into the mold through the pouring equipment.

[0041] 2) Epoxy resin is processed by step curing method. The curing process is divided into two steps. First, put the vacuum-treated mold into the oven for primary curing, and then demould; put it into the oven again for secondary curing, and you can get it after cooling. Epoxy resin pot insulators.

[0042] 3) Gradient design is carried out on the epoxy resin pot insulator, that is, its surface is divided into five closely connected rings from the inside to the outside, so that the relative permittivity of the ring first decreases and then increases:

[0043] Place the epoxy resin pot insulator in the magnetron sputteri...

Embodiment 3

[0046]1) Put the epoxy resin base, curing agent and alumina into the mixing tank according to the ratio of 100:38:330, the temperature is 130°C, turn on the motor to stir, vacuum degassing; push the preheated mold into the pouring tank, Carry out evacuation treatment; pour the mixed epoxy resin mixture into the mold through the pouring equipment.

[0047] 2) Epoxy resin is processed by step curing method. The curing process is divided into two steps: first put the mold after vacuum treatment into the oven for primary curing, then demould, put it into the oven again for secondary curing, and get the product after cooling Epoxy resin pot insulators.

[0048] 3) Gradient design is carried out on the epoxy resin pot insulator, that is, its surface is divided into five closely connected rings from the inside to the outside, so that the relative permittivity of the ring first decreases and then increases:

[0049] Place the epoxy resin pot insulator in the magnetron sputtering equi...

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Abstract

The invention discloses a design method of a GIS insulator with 2D U type gradient distribution of a dielectric constant. The method mainly comprises that an epoxy resin material is prepared; a step solidification method is used for processing; and gradient design in carried out on the epoxy resin basin type insulator by the surface of the epoxy resin basin type insulator is divided into five rings tightly connected from inside to outside, decreasing and then increasing the relative dielectric constant of the rings, placing the epoxy resin basin type insulator in a magnetron sputtering device,carrying out sputtering in different positions for different time (within the time scope of 0 to 60min) according to U type distribution gradient, and obtaining the basin type insulator of 2D gradient distribution. Thus, a local electric field in the AC voltage is prevented from being too high, the electricity withstanding performance of an insulating system is improved, and the design method hastheoretical and engineering significance in improving the operational stability of a GIS as well as the safety of a power system.

Description

technical field [0001] The invention belongs to the field of modified polymeric materials and their preparation in the manufacture of high-voltage equipment, and relates to a design method for GIS insulators with a two-dimensional U-shaped gradient distribution of dielectric constant, in particular to a two-dimensional U-shaped gradient distribution of dielectric constant The GIS epoxy resin insulator design method. Background technique [0002] In recent years, with the development of high-voltage and large-capacity power transmission in power systems, gas-insulated metal-enclosed switchgear (GIS) and gas-insulated metal-enclosed transmission lines (GIL) have advantages, has been widely concerned and applied. Among them, the pot insulator not only plays the role of mechanical support, but also acts as an electrical insulator, which plays a decisive key role in the safe and stable operation of the entire GIS and GIL. However, even in the demanding 1000kV AC UHV project, ep...

Claims

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Application Information

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IPC IPC(8): H01B19/04
CPCH01B19/04
Inventor 杜伯学王泽华李进冉昭玉梁虎成
Owner TIANJIN UNIV
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